Engraver s ruli-ng-machine



(No Model.)

2 Shets- Sheet 1. P. L. BAILEY.

ENGRAVERS RULING MACHINE.

No. 363,942. -Patented May 31, 1887.

mllmlml I II 3w ewkw (No Model.) 2 Sheets-Sheet? P. L. BAILEY.

ENGRAVERS RULING MACHINE.

Patented May 31, 1887.

UNITED STATES 7 PATENT OE icE.

FRANKLIN L. BAILEY, OF BOSTON, MASSACHUSETTS.

ENGRAVERS RULFNG-MACIHINE.

SPECIFICATION forming part of Letters Patent No. 363,942, dated May 31, 1887.

Application filed OCUlJCI' 25, 1886.

To all whom it may concern:

Be it known that I, FRANKLIN L. BAILEY, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massa chusetts, have invented new and useful Improvements in Engravers Ruling-Machines, of which the following is a specification.

The first part of my invention is found in that part of engravers ruling-machines known as the pawl attachment, which turns the ratchet-wheel and the main screw. It consists of limiting the movement of the pawl on its hinge sufficiently to just clear theteeth of the wheel in the reverse movement ofthepawl handle, the pawl being pressed out of engagementwith the teeth by the finger against astop. The importance of lifting the pawl from the teeth comes from the liability of turning the screw backward, the wearing of the teeth, and noise resulting when the pawl drags over the teeth in this reverse movement. In feeding, the finger, with its varying and uncertain strength, feeling the impact against this stop, continues it by pressure, while the hand and wrist go through the reverse movement of the handle with comfort and greater exactness, though the handle constantly takes different angles with regard to them.

The second part of my invention consists in an arrangement for the automatic dropping onto and raising of the cutter from the block, so that the hand feeding the screw may remain at the feed-handle and not pass to the cutter for every line out, these parts not being ataall in the operators way or light. Greater speed in working resulting, and, because the cutterholder is not touched by the hand and is free from its irregularities of weight and strength, there is much more evenness and delicacy in the work produced; but this automatic apparatus is applicable only to a portion of the work required. On account of a constant variation of the lines required as to depth in some kinds of work, the usual method of depression of the cutter by hand cannot be dispensed with with economy. So, by proper adjustment of parts 1 am able to suspend the automatic action and take up that of hand-work, and in this alternation, effected with great facility, is found an important part of my invention. This mechanism is fully illustrated in theaccompanying drawings, in which Serial No. 217.179. (No model.)

lifted from the block, and the position ofmechanisin corresponding automatically used. Fig. 3 is an end view corresponding with Figs-1 and 2, showing the pawl ip its intermediate position; also, the position of the automatic apparatus, butthe cutter resting on the block;

also, showing the position of the wave-ruled cylinder. Fig. 4 is a magnified side view of as much of this machine as will show these machines as now used, the automatic parts being suspended from operation. Figs. 5 and 6 are'magnified detached views of the ratchetwheel. pawl, its handle, and spring, showing the position of the button-stop and related parts. b

The same letters refer to similar parts in the several drawings. i

A A is the frame of the machine, which supports all the moving parts, this frame having two extensions outfrom its oppositesides upon which are planted posts which support the two ends of a beam, B, upon which beam, moving on ways, is a slideor carriage, O, which slides with all upon it toward and from the operator. D is a fixed bracket on this slide, which carries pivoted at its top and bottom ends a frame,

E, which in turn has hinged at its outer and I inner ends the vibrating tool-holder H, which also has upon it, at its front and free end, the cutter h, its regulatingscrew I, and foot or shoe 1, the screw and shoe regulating the depth and. width of the lines cut. The free end of the holder H is moved upward from the I block by the flat spring K, being pressed downwardby the hand. (Seen in Fig. 4.) Upon the front end and top of the frame E -is a tracer, L, of the surface of the-figured cylinder M, the point of this tracer being pressed against the cylinder by the spring e c,

Figs. 1 and 3, behind the lower part of the block can be met by the point of the cutter h. This tableT is moved right and left by the main screw S,-moving on supports at its ends S S. (Seen in Figs. 1 and 2.) Upon the end of S, at the extreme left, is fixed a ratchetwheel, W, Figs. 1, 2, and 3. The support S of the screw is also that of the disk U, through the center of which extends the screw-bearing. Upon this disk, between it and the ratchetwheel, on a neck swings the feed-handle V, whose upward swing is regulated by the movable gage V, placed on the outer edge of the disk. The pawlhandle V carries pivoted on a stud the pawls Z Z and their cam Y, which together are swung on their stud by the pressure of the point of the spring Y upon the inclined surfaces of the cam Y; also, a button or. stop, J, which stops or stays themoven'ient of the pawl after its points are disengaged from the teeth in ratchet-wheel W'. The relative situation of these parts is seen in Fig. 3, where the pawl is seen not operating, the spring being at a dead-point notch.

Figs. 5 and 6 represent the upper point of the pawl as feeding. That the pawl-points may not drag over the teeth upon the reverse movement of the handle, it is pressed out of engagement by the finger against the stop J, which in this case is in position over the cam Y; but when feeding in the opposite dired tion, and the lower point engages the teeth, the point of the stop J enters the square cavity in the cam, so that the finger pressing upon the upper half of the pawl the lower point is disengaged, this'stop arresting the movement of the pawl at a point well free from the teeth. As the pressure of the'fingers is irregular and uncertain, and that the deadpoint may be avoided, and because the pawlhandle assumes different angles with the hand and arm, I make use of this stop to give composure to the fingers operating. If it be a single-pointed pawl, and that one a hook hooking .onto the teeth made at a proper angle, I think it would be the same as this in principle if a stop were used to stay its movements.

That the hand which does the feeding may remain at the pawl-handle continuously, I have provided means for dropping the cutter and raising it by the swing-lever F, hinged close to the pawl-handle so that the thumb and fingers can clasp it while still encircling the pawl-handle, and swing, after the feed is made, into the position shown in dotted lines as that of the pivot of therod R,Fi g. 1, which rod connects at its other end with the lower end of the stem Pfiextending down from a lifting-plate, P, pivoted at opposite sides of the frame in the upright posts, this plate lying underneath the bed B and parallel with the course of the cutter. By a counter-balance, P, the plate is raised in itsmovement upward into a level position, sidewise considered. This weight is suificient also to raise the free end of the toolholder II and its cutter by means of an arm, G, extending from the inner side of the toolholder to the edge of the plate and resting uponit. As the carriage 0 moves back and forth, the tool-holder will be held up over the whole extent of the engraved block; but when the plate is swung downward the holder and cutter will follow until the latter will rest upon the block. The cutter-holder is drawn downward by a flat spring, K, extending from the under sideof the bracket D, the spring taking hold of a hook on arm G. The hand at F bears the plate down until the cutter rests on the block, and still a little farther against a stop, so that G will be free from contact with the plate when the lines are out. It will be seen also that the-lateral movement of the toolholder and its frame E and the cutter, caused by the tracer L following the surface of the wave'rule, will not in the least be disturbed.

I have said above that the spring K, which is alongside of- K serves to lift H. When the just-described automatic dropper is used, the spring K is swung from under H and is inoperative, and K is put into use on its hook. \Vhen the automatic apparatus is'no longer desired, the spriugK is removed from its hook, the spring K is replaced under H, and the plate I? is fastened in its lowest position by means of thelateh Q, hinged to the inside of one of the posts of the frame, taking hold on a pin on stem P, as clearly shown in Fig. 4, which shows the relative position of all the parts when the cutter is pressed into service by the hand on H.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In an engravers ruliug-machine,the combination of a work-carrying carriage, a feedserew for moving said carriage, a ratchet wheel secured upon said screw,a lever mounted upon and movable about theaxis of said screw, a pawl carried by said lever and constructed and arranged to engage with the teeth of said ratchet-wheel, and to be retracted therefrom by the hand of the operator, a stop constructed and arranged to limit. the movement of said pawl when retracted, and a spring arranged said hand lever in position to engage with the teeth of said ratchet-wheel, a cam firmly fixed to said pawl, so as to be movable therewith, and provided with a peripheral cam surface and a dead-point, aspring constructed and arranged to press alternately upon said cam surface and dead point to hold said pawl in engagement with the ratchet-wheel or outof engagement therewith, and a stop to limit the movement of the pawl about its axis when retracted from engagement with said ratchet-wheel.

,3. The combination of the lever V, the cam Y, the spring Y, the movable stop J, and the pawl Z, all constructed, arranged, and operating substantially as and for the purposes described.

- 4. As a means of alternately or interchange. ably depressing the tool-holder to bring the cutter into action upon the work automatioally or by hand, the combination, with a pivoted tool-holder, of two springs constructed and arranged to be interchangeably connected to said tool-holder, one to press said holder upward and the other to press it downward, a lifter-bar for raising the tool-holder against the tension of the downwardly-pressing spring, anda stop for locking said lifting-bar in its retracted position.

5. The combination of the tool-holder H, provided with the arm or lug G, a spring for pressing said holder downward, a lifter-bar for raising said tool-holder, and mechanism, substantially as described, for -moving said lifter-bar through a greater are of descent than the fall of said arm G, whereby said bar will be removed from all contact with said ar while the line is being cut.

6. The combination, with a pivoted toolholder and a spring for pressing said holder downward into contact with the block to be cut, of the rocker-lifting plate P, the arm G,

projecting from the tool-holder above the free edge of said plate, the counter-balance P, secured to said lifter-plate upon the side opposite to the arm G, the lever F, the rod R, and lever P all constructed,arranged,and adapted to operate substantially as described.

7. The combination of a pivoted tool-holder provided with a laterally-projecting arm or lug, a lifter-bar arranged to engage with the under side of said 'arm or lug to raise said tool-holder, and means, substantially as deupward whether the tool-holder be at one 8X treme or the other of its lateral vibration.

9. In combination with a pivoted toolholder provided with a laterally-projecting arm oi'lug, a lifter-bar for raising said toolholder, mechanism, as set forth, for moving said lifterbar through a distance greater than the descent of said lug or arm, and a stop for locking said lifter-bar at the extreme of its downward movement and out of the path of said arm or lug when the tool-holder isbeing depressed by hand.

10. The combination of the holder H, a lifter-bar for raising said holder, and mechanism, substantially as set forth, for operating said lifter-bar, said bar being located beneath or behind the beam B, so as to be removed from the operators view of the work while the lines are being out.

FRANKLIN L. BAILEY.

, Witnesses:

SUMNER ALBEE, STEPHEN P. Woon. 

